US6843502B2 - Occupant restraint system - Google Patents
Occupant restraint system Download PDFInfo
- Publication number
- US6843502B2 US6843502B2 US10/164,294 US16429402A US6843502B2 US 6843502 B2 US6843502 B2 US 6843502B2 US 16429402 A US16429402 A US 16429402A US 6843502 B2 US6843502 B2 US 6843502B2
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- US
- United States
- Prior art keywords
- airbag
- cells
- restraint system
- occupant restraint
- inflator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
- B60R21/213—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in vehicle roof frames or pillars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/04—Padded linings for the vehicle interior ; Energy absorbing structures associated with padded or non-padded linings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/23—Inflatable members
- B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
- B60R21/232—Curtain-type airbags deploying mainly in a vertical direction from their top edge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/04—Padded linings for the vehicle interior ; Energy absorbing structures associated with padded or non-padded linings
- B60R2021/0414—Padded linings for the vehicle interior ; Energy absorbing structures associated with padded or non-padded linings using energy absorbing ribs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/04—Padded linings for the vehicle interior ; Energy absorbing structures associated with padded or non-padded linings
- B60R2021/0435—Padded linings for the vehicle interior ; Energy absorbing structures associated with padded or non-padded linings associated with the side or roof pillars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R2021/161—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by additional means for controlling deployment trajectory
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/23—Inflatable members
- B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
- B60R21/233—Inflatable members characterised by their shape, construction or spatial configuration comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other
- B60R2021/23316—Inner seams, e.g. creating separate compartments or used as tethering means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
- B60R21/215—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components characterised by the covers for the inflatable member
Definitions
- the present invention relates to an occupant restraint system in which a side airbag is disposed in a folded state along an upper edge of a door opening of a vehicle body, and the airbag is inflatable by a gas, generated by an inflator, when the vehicle is involved in a collision. Upon activation thereof, the airbag is deployed in a curtain shape along the inner face of a side of an occupant compartment.
- Such an occupant restraint system is known in, for example, Japanese Patent Application Laid-open Nos. 2000-33847 and 11-235965.
- the airbag of this type of occupant restraint system is folded in a zigzag manner along fold lines extending in the longitudinal direction and designed so that it deploys when a gas is supplied to a plurality of cells extending downward from an upper communicating passage extending to an inflator.
- the cells of the airbag are defined by sewing two fabrics superimposed one on top of the other, the parts interposed between adjoining lines of stitching forming cells, which are inflated by the gas that flows in.
- the cell end parts formed by the point where the stitching stops, cannot be inflated sufficiently since the two sheets of fabric are united by sewing, and there is a possibility that these parts might have an insufficient impact-absorbing effect.
- the pressure of the gas inflating the airbag might be distributed equally to all of the cells, resulting in individual cells becoming bent in two at the center in the vertical direction, and preventing smooth deployment.
- the present invention has been carried out in view of the above-mentioned circumstances, and it is a first object of the present invention to compensate for an insufficient impact-absorbing effect at the cell end parts of an airbag.
- a first aspect of the present invention proposes an occupant restraint system in which an airbag is disposed in a folded state along an upper edge of a door opening of a vehicle body, and the airbag is adapted to be inflated by a gas, generated by an inflator, when the vehicle is involved in a collision. Upon activation thereof, the airbag is deployed in a curtain shape along the inner face of a side of an occupant compartment.
- the airbag according to the invention includes a plurality of cells that are defined by a connecting part.
- the cells are inflatable by the gas generated by the inflator when the airbag is deployed, and at least one of the end parts of the cells is positioned in the vicinity of an impact absorbing member.
- the connecting part of the present invention corresponds to stitching 27 in particular disclosed embodiments, and one aspect of an impact absorbing member according to the present invention corresponds to a center pillar garnish 53 , a rear pillar garnish 61 , and/or a front pillar garnish 64 .
- a second object of the present invention is to smoothly deploy an airbag that has a plurality of cells and is folded along fold lines.
- a second aspect of the present invention proposes an occupant restraint system in which an airbag is disposed in a folded state along an upper edge of a door opening of a vehicle body and the airbag is inflated by a gas generated by an inflator when the vehicle is involved in a collision so that it is deployed in a curtain shape along the inner face of a side of an occupant compartment, wherein the airbag includes a plurality of cells that are inflatable by the gas generated by the inflator, and the end parts of the cells are non-vertically aligned relative to a fold line of the airbag, extending in the longitudinal direction of the vehicle.
- the timing of the gas flowing into the end parts of the plurality of cells is staggered, thus preventing the individual cells from bending in two at the center in the vertical direction, and thereby smoothly deploying the airbag.
- FIGS. 1 to 12 show a first embodiment of the present invention.
- FIG. 1 is a perspective view showing an interior of the occupant compartment of an automobile.
- FIG. 2 is a view corresponding to FIG. 1 , showing a state in which an airbag of an occupant restraint system has been deployed.
- FIG. 3 is a magnified view of the occupant restraint system in which the airbag has been deployed.
- FIG. 4 is an exploded perspective view of the occupant restraint system.
- FIG. 5 is a magnified cross section along line 5 — 5 of FIG. 1 .
- FIG. 6 is a magnified cross section along line 6 — 6 of FIG. 1 .
- FIG. 7 is a magnified cross section along line 7 — 7 of FIG. 1 .
- FIG. 8 is a magnified cross section along line 8 — 8 of FIG. 1 .
- FIG. 9 is a magnified cross section along line 9 — 9 of FIG. 3 .
- FIG. 10 is a magnified cross section along line 10 — 10 of FIG. 5 .
- FIG. 11 is a view from arrow 11 of FIG. 4 .
- FIG. 12 is a view from arrow 12 of FIG. 7 .
- FIGS. 13 and 14 show a second embodiment of the present invention.
- FIG. 13 is a view corresponding to FIG. 2 .
- FIG. 14 is a magnified view of section 14 in FIG. 13 .
- FIG. 15 shows a third embodiment of the present invention and is a view corresponding to FIG. 14 .
- FIG. 16 shows a fourth embodiment of the present invention and is a view corresponding to FIG. 14 .
- the first embodiment of the present invention is explained by reference to FIGS. 1 to 12 .
- a door opening 14 formed between a front pillar 11 and a center pillar 12 on a vehicle body side face is a door opening 14 in which a front door 13 is mounted, and formed between the center pillar 12 and a rear pillar 15 is a door opening 17 in which a rear door 16 is mounted.
- a roof side rail 18 extends in the longitudinal direction of the vehicle body, so as to provide a connection between the upper end of the front pillar 11 and the upper end of the rear pillar 15 .
- the roof side rail 18 defines the upper edges of the door openings 14 and 17 of the front door 13 and the rear door 16 .
- An occupant restraint system C is provided along the roof side rail 18 .
- the occupant restraint system C is provided on each of the left and right sides of the vehicle body.
- the occupant restraint systems on the respective left and right sides have a substantially identical mirror-image structure, and that provided on the right side of the vehicle body is explained below as being representative thereof.
- an airbag 21 of the occupant restraint system C is deployed downward in a curtain shape from the upper edges of the door openings 14 and 17 , so as to block occupants seated in front and rear seats from impacting against the inner side face of the vehicle body, that is to say, the front pillar 11 , the center pillar 12 , the rear pillar 15 , a door glass 13 a of the front door 13 , and/or a door glass 16 a of the rear door 16 .
- the airbag 21 extending in the longitudinal direction of the vehicle body is formed by sewing with stitching 27 a first base fabric 25 and a second base fabric 26 superimposed one on top of the other, the two having substantially the same shape (see FIG. 9 ).
- the stitching 27 forms a plurality of (for example, six) cells 28 a to 28 f and an upper communicating passage 29 , which is in fluid communication with the cells.
- the cells are non-parallel.
- the shape of the cells 28 a to 28 f is not uniform and can be formed into a J-shape or a U-shape by curved lines of stitching 27 .
- the front end of a gas supply pipe 31 extending forward from an inflator 30 housed within the rear pillar 15 is inserted within the upper communicating passage 29 .
- the six cells 28 a to 28 f branch downward from the upper communicating passage 29 .
- the part via which the gas supply pipe 31 is inserted within the upper communicating passage 29 is secured by means of a metal band, etc. and sealed in a gas-tight manner.
- the end parts a to f of the six cells 28 a to 28 f are sewn in the shape of a small circle, in order to prevent the sewing thread from snapping and to increase the strength.
- Positions of the airbag 21 that correspond to the rear side of the front pillar 11 and the rear side of the center pillar 12 are provided with non-inflatable sections 21 b and 21 c where no cells 28 a to 28 f are formed.
- an impact absorbing member 33 which is a corrugated pipe, is integrated with the airbag 21 by means of the impact absorbing member supports 21 a.
- the impact absorbing member 33 is formed into a bellows having a circular cross section by laminating a central main body 33 a made of aluminum and inner and outer coverings 33 b and 33 c made of paper, and it can be made to collapse by an external load, thereby exhibiting an effective impact-absorbing effect.
- a roof 34 is formed from an outer member 35 , a center member 36 , and an inner member 37 , and the upper ends of the four impact absorbing member supports 21 a on the rear side of the airbag 21 are each fixed to the inner member 37 by means of two bolts 38 (see FIGS. 5 to 7 ).
- the front pillar 11 is formed from an outer member 39 , a center member 40 , and an inner member 41 , and the upper end of the impact absorbing member support 21 a on the front end of the airbag 21 is fixed to the inner member 41 by means of two bolts 38 (see FIG. 8 ).
- the folded airbag 21 and the impact absorbing member 33 are integrated in advance to form a module in this way, the mounting operation therefor becomes easy in comparison with a case where they are individually mounted in the vehicle body, thereby enhancing the operational efficiency and the precision of assembly. Moreover, since both the folded airbag 21 and the corrugated pipe impact absorbing member 33 are flexible, they can be placed easily along the curved roof side rail 18 .
- the folded airbag 21 is housed within an airbag cover 42 formed from a nonwoven fabric.
- the airbag cover 42 is made by sewing along the lower edges of a tube formed from a rectangular piece of cloth, and includes, on the side facing the roof side rail 18 , perforation slits 42 a that can be ruptured easily.
- the impact absorbing member supports 21 a projecting from the upper end of the airbag 21 pass through openings 42 b formed on the upper face of the airbag cover 42 and project upward.
- a weather strip 46 is provided on the lower end of the roof side rail 18 formed from an outer member 43 , a center member 44 , and an inner member 45 .
- the weather strip 46 can make contact with the rear door 16 (or the front door 13 ).
- the edge of a synthetic resin roof garnish 47 positioned along the lower face of the roof 34 latches on the edge of the weather strip 46 projecting from the lower end of the roof side rail 18 toward the occupant compartment.
- the occupant compartment-facing lower face of the roof garnish 47 is covered with a skin material 49 , and this skin material 49 is wrapped around the edge of the roof garnish 47 from the lower face side to the upper face side. It is possible thereby to prevent the edge of the synthetic resin roof garnish 47 from splitting and shattering when it is exposed to an impact.
- the center pillar 12 extending downward from the roof side rail 18 is formed from an outside panel 65 , a stiffener 66 , and a center pillar inner 67 .
- a front bracket 50 is mounted extending from the inner member 37 of the roof 34 to the center pillar inner 67 of the center pillar 12 .
- the front bracket 50 is formed by bending a metal sheet; its upper part is superimposed on and, together with the impact absorbing member support 21 a of the airbag, fixed to the inner member 37 of the roof 34 by means of two bolts 38 , and its lower part is fixed to the center pillar inner 67 of the center pillar 12 by means of two bolts 51 .
- a projection 52 is formed in the middle section of the front bracket 50 projecting toward the occupant compartment.
- a guide surface 52 a formed on the upper face of the projection 52 , faces the lower end of the folded airbag 21 .
- a pair of latches 53 a projectingly provided on the inner face of an upper part of the center pillar garnish 53 , engage with two latching holes 52 b formed in the lower face of the projection 52 .
- Formed on the inner face of the center pillar garnish 53 are a large number of impact absorbing ribs 53 b (see FIGS. 2 and 6 ) in order to absorb the impact of a secondary collision with an occupant.
- the upper part of the center pillar garnish 53 can thereby be fixed to the center pillar 12 without employing a special clip, etc. and, moreover, the center pillar garnish 53 can be fixed more securely in comparison with the case where a clip is employed.
- the lower edge of the roof garnish 47 is fixedly interposed between the top face 52 c of the projection 52 of the front bracket 50 and the inner face at the upper end of the center pillar garnish 53 .
- the rear pillar 15 extending downward from the roof side rail 18 is formed from an outer member 54 , a center member 55 , and an inner member 56 , and a rear bracket 57 is mounted extending from the inner member 37 of the roof 34 to the inner member 56 of the rear pillar 15 .
- the rear bracket 57 has substantially the same shape as that of the front bracket 50 ; its upper part is superimposed on and, together with the impact absorbing member support 21 a of the airbag 21 , fixed to the inner member 37 of the roof 34 by means of two bolts 38 , and its lower part is fixed to the inner member 56 of the rear pillar 15 by means of two bolts 58 .
- Formed in the middle section of the rear bracket 57 is a projection 59 projecting toward the occupant compartment, and a guide surface 59 a formed on the upper face of the projection 59 faces the lower end of the folded airbag 21 .
- a rear pillar garnish 61 is fixed to the inner member 56 of the rear pillar 15 by means of a clip 60 and has on its upper end a flange 61 a bending toward the outside of the vehicle body, and formed on the lower edge of the roof garnish 47 is a flange 47 a that abuts the flange 61 a of the rear pillar garnish 61 .
- the flange 47 a of the roof garnish 47 has a plurality of (five in the embodiment) latches 47 b projecting downward, and these latches 47 b engage with the reverse face of the flange 61 a of the rear pillar garnish 61 .
- Formed on the inner face of the rear pillar garnish 61 are a large number of impact absorbing ribs 61 c (see FIGS. 2 and 7 ) in order to absorb the impact of a secondary collision with an occupant.
- a side edge of a front glass 63 is supported on the front face of the front pillar 11 via a rubber member 62 , and mounted between the rubber member 62 and a weather strip 48 provided on the rear face of the front pillar 11 is a front pillar garnish 64 having an arc-shaped curved cross section.
- the upper half of the front pillar garnish 64 is hollow, and the folded non-inflatable part 21 b on the front end of the airbag 21 and the front end part of the impact absorbing member 33 are housed therewithin.
- Integrally formed on the inner face of the lower half of the front pillar garnish 64 which houses neither the airbag 21 nor the impact absorbing member 33 , are a large number of impact absorbing ribs 64 a for absorbing an impact.
- a front side-collision sensor 71 and a rear side-collision sensor 72 are connected to an electronic control unit 73 , and when the electronic control unit 73 detects a vehicle side collision (or a vehicle rollover) based on signals from the two acceleration sensors 71 and 72 , the electronic control unit 73 outputs an operation signal to the inflator 30 so as to deploy the airbag 21 .
- the inflator 30 When a vehicle side collision is detected, the inflator 30 operates, and the gas stored under pressure within the inflator 30 flows into the six cells 28 a to 28 f via the gas supply pipe 31 and the upper communicating passage 29 , thus inflating the six cells 28 a to 28 f . Inflating the airbag 21 ruptures the slits 42 a of the airbag cover 42 , and the airbag 21 whose restraint has been released deploys downward.
- the lower edge of the roof garnish 47 is pressed downward due to the pressure of the deploying airbag 21 , thus releasing the engagement with the weather strip 46 , and the airbag 21 deploys downward within the occupant compartment through the opening so formed.
- the lower edge of the roof garnish 47 is pressed downward due to the pressure of the deploying airbag 21 , thus releasing the engagement with the upper end of the center pillar garnish 53 , and the airbag 21 deploys downward within the occupant compartment through the opening so formed.
- the airbag 21 can be deployed yet more smoothly while avoiding any interference with the center pillar garnish 53 .
- the airbag 21 deploys downward within the occupant compartment through the opening so formed.
- the deploying airbag 21 is guided obliquely downward toward the occupant compartment along the tilted guide surface 59 a of the projection 59 of the rear bracket 57 , the airbag 21 can be deployed smoothly while avoiding any interference with the rear pillar garnish 61 .
- the two flanges 47 a and 61 a abut each other without forming any step, thereby enhancing the appearance.
- the latches 47 b of the roof garnish 47 flex and easily disengage from the flange 61 a of the rear pillar garnish 61 when the airbag 21 is being deployed, it is possible to reliably form an opening between the roof garnish 47 and the rear pillar garnish 61 , the airbag 21 being deployed through the opening.
- the rear edge of the front pillar garnish 64 is pressed downward due to the pressure of the deploying airbag 21 , thus releasing the engagement with the weather strip 48 , and the airbag 21 deploys downward within the occupant compartment through the opening so formed.
- the end part b is positioned in the vicinity of the center pillar garnish 53
- the end parts c and d are positioned on top of the center pillar garnish 53
- the end part e is positioned in the vicinity of the rear pillar garnish 61 as is clear from FIG. 2 .
- FIG. 9 shows the two end parts b and c, which are positioned in the vicinity of the center pillar garnish 53 and on top of the center pillar garnish 53 respectively. Even if the airbag 21 cannot exhibit a sufficient impact-absorbing effect in the vicinity of these non-inflatable end parts b and c, a required impact-absorbing effect can be ensured by collapse of the impact absorbing ribs 53 b provided in the center pillar garnish 53 positioned behind the airbag 21 . Two other end parts d and e, which correspond to the center pillar garnish 53 and the rear pillar garnish 61 respectively, can also give the above-mentioned effect.
- the occupant restraint system C When the acceleration caused by a side collision is equal to or less than a predetermined value, the occupant restraint system C does not operate, but when the impact causes a secondary collision between an occupant and the lower edge of the roof garnish 47 facing the roof side rail 18 or an upper part of the front pillar garnish 64 , not only does the corrugated pipe impact absorbing member 33 collapse, thus absorbing the impact, but also the folded airbag 21 exhibits a function of enhancing the impact-absorbing effect. In this case, since the impact absorbing member 33 is supported so as to be in contact with the inner member 37 of the roof 34 and the inner member 41 of the front pillar 11 (see FIGS. 5 to 8 ), it can be reliably made to collapse by pressure from these inner members 37 and 41 , thereby effectively absorbing the impact of the secondary collision.
- FIGS. 13 and 14 members corresponding to the members of the first embodiment are denoted by the same reference numerals and symbols as in the first embodiment, and duplication of the explanation is omitted.
- an airbag 21 extending in the longitudinal direction of the vehicle body is formed by sewing with stitching 27 a first base fabric 25 and a second base fabric 26 superimposed one on top of the other, the two having substantially the same shape (see FIG. 9 ).
- the stitching 27 forms a plurality of (for example, thirteen) cells 28 and an upper communicating passage 29 .
- the front end of a gas supply pipe 31 extending forward from an inflator 30 housed within the rear pillar 15 is inserted within the upper communicating passage 29 .
- the lower ends of the thirteen cells 28 branching downward from the upper communicating passage 29 are blocked.
- the part via which the gas supply pipe 31 is inserted within the upper communicating passage 29 is secured by means of a metal band, etc. and sealed in gas-tight manner.
- Positions at the upper ends of the thirteen cells 28 extending to the lower part of the upper communicating passage 29 formed along the upper edge of the airbag 21 , that is, the end parts a to o of the thirteen cells 28 , are not aligned relative to a fold line L of the airbag 21 , but are positioned alternately at higher positions and lower positions.
- the inflator 30 When a vehicle side collision is detected, the inflator 30 operates, and the gas stored under pressure within the inflator 30 flows into the thirteen cells 28 via the gas supply pipe 31 and the upper communicating passage 29 , thus inflating the thirteen cells 28 . Inflating the airbag 21 ruptures slits 42 a (see FIG. 4 ) of an airbag cover 42 , and the airbag 21 whose restraint has been released deploys downward.
- the airbag 21 folded along the fold line L starts to deploy in response to the gas flowing into the cells 28 from the upper communicating passage 29 , and since the end parts a to o of the cells 28 are not vertically aligned relative to the fold line L of the airbag 21 , the timing of the gas flowing into each of the cells 28 is staggered. Supplying the gas to each of the cells 28 with staggered timing in this way can prevent all of the cells 28 from bending in a V-shape at the middle in the vertical direction, thereby smoothly deploying the airbag 21 .
- the end parts a to o of the thirteen cells 28 are positioned alternately up and down, but in an airbag 21 of the third embodiment, pairs of end parts a to o of thirteen cells 28 are positioned alternately up and down.
- This third embodiment can also achieve the same effect as the second embodiment.
- the cells 28 are formed in a tube shape extending vertically, but cells 28 of an airbag 21 of the fourth embodiment are formed in a J-shape or a U-shape by curved lines of stitching 27 , and the end parts p to u of these cells 28 are not vertically aligned relative to a fold line L of the airbag 21 .
- This fourth embodiment can also achieve the same effect as the second and third embodiments.
- the shape of the cells 28 a to 28 f , 28 of the airbag 21 are not limited to those of the embodiments, and any shape can be employed.
- the connecting part of the airbag 21 is formed from the stitching 27 , but it may be formed by adhesion or Jacquard weaving (seamless).
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Bags (AREA)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP2001175069A JP3626701B2 (ja) | 2001-06-11 | 2001-06-11 | 乗員拘束装置 |
JP2001-175070 | 2001-06-11 | ||
JP2001175070A JP3999475B2 (ja) | 2001-06-11 | 2001-06-11 | 乗員拘束装置 |
JP2001-175069 | 2001-06-11 |
Publications (2)
Publication Number | Publication Date |
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US20030006588A1 US20030006588A1 (en) | 2003-01-09 |
US6843502B2 true US6843502B2 (en) | 2005-01-18 |
Family
ID=26616666
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US10/164,294 Expired - Lifetime US6843502B2 (en) | 2001-06-11 | 2002-06-06 | Occupant restraint system |
Country Status (4)
Country | Link |
---|---|
US (1) | US6843502B2 (fr) |
CN (1) | CN1278888C (fr) |
CA (1) | CA2389989C (fr) |
DE (1) | DE10225214B4 (fr) |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040212179A1 (en) * | 2003-01-07 | 2004-10-28 | Honda Motor Co., Ltd. | Occupant restraint system |
US20040256843A1 (en) * | 2003-06-23 | 2004-12-23 | Toyoda Gosei Co., Ltd. | Head-protecting airbag device |
US20050189745A1 (en) * | 2004-02-02 | 2005-09-01 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Curtain airbag system |
US20060208467A1 (en) * | 2005-03-18 | 2006-09-21 | Takata Restraint Systems, Inc. | Head impact energy-absorbing inflatable curtain gas delivery tube |
US20060267315A1 (en) * | 2005-05-26 | 2006-11-30 | Trw Vehicle Safety Systems Inc. | Bracket assembly for an inflatable curtain |
US20070252366A1 (en) * | 2006-04-24 | 2007-11-01 | Delphi Korea Corporation | Side airbag for vehicle |
US20100052369A1 (en) * | 2008-08-28 | 2010-03-04 | Hyundai Motor Company | Roof-side structure of vehicle |
US20120043740A1 (en) * | 2010-08-18 | 2012-02-23 | Autoliv Development Ab | Curtain Airbag Cushion and Curtain Airbag Module Using the Same |
US20120267879A1 (en) * | 2009-09-25 | 2012-10-25 | Minfun Kim | Curtain airbag device |
US8353530B2 (en) | 2010-05-07 | 2013-01-15 | Autoliv Asp, Inc. | Inflatable airbag assemblies with anti-slip patches |
US20130069349A1 (en) * | 2011-09-21 | 2013-03-21 | Chrysler Group Llc | Side airbag deployment arrangement |
US20130134694A1 (en) * | 2010-08-06 | 2013-05-30 | Autoliv Development Ab | Curtain airbag |
US20130249198A1 (en) * | 2011-12-21 | 2013-09-26 | Hayashi Telempu Co., Ltd. | Pillar garnish |
US8608192B2 (en) * | 2011-03-15 | 2013-12-17 | Takata AG | Side airbag for a vehicle occupant restraint system of a motor vehicle |
US9248800B1 (en) * | 2014-09-26 | 2016-02-02 | Toyota Motor Engineering & Manufacturing North America, Inc. | Side pillar assemblies with retention structures for side airbags |
US9446732B2 (en) | 2014-06-13 | 2016-09-20 | Ford Global Technologies, Llc | Side pillar air curtain guide |
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JP6254967B2 (ja) * | 2015-03-02 | 2017-12-27 | 豊田鉄工株式会社 | 車両用フロントピラー |
CN110958961B (zh) | 2017-08-22 | 2022-10-28 | 河西工业株式会社 | 汽车用内饰部件 |
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US20100052369A1 (en) * | 2008-08-28 | 2010-03-04 | Hyundai Motor Company | Roof-side structure of vehicle |
US7988182B2 (en) * | 2008-08-28 | 2011-08-02 | Hyundai Motor Company | Roof-side structure of vehicle |
US20120267879A1 (en) * | 2009-09-25 | 2012-10-25 | Minfun Kim | Curtain airbag device |
US8651516B2 (en) * | 2009-09-25 | 2014-02-18 | Autoliv Development Ab | Curtain airbag device |
US8353530B2 (en) | 2010-05-07 | 2013-01-15 | Autoliv Asp, Inc. | Inflatable airbag assemblies with anti-slip patches |
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US20130134694A1 (en) * | 2010-08-06 | 2013-05-30 | Autoliv Development Ab | Curtain airbag |
US8366145B2 (en) * | 2010-08-18 | 2013-02-05 | Hyundai Motor Company | Curtain airbag cushion and curtain airbag module using the same |
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US8702124B2 (en) * | 2011-09-21 | 2014-04-22 | Chrysler Group Llc | Side airbag deployment arrangement |
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US10053046B2 (en) | 2015-09-04 | 2018-08-21 | Ford Global Technologies, Llc | Side pillar air curtain guide |
US10486636B2 (en) | 2015-09-04 | 2019-11-26 | Ford Global Technologies, Llc | Side pillar air curtain guide with air curtain insert of honeycomb construction |
US10717404B2 (en) | 2015-09-04 | 2020-07-21 | Ford Global Technologies, Llc | Side pillar air curtain guide with air curtain insert having a plurality of ribs |
US20190126882A1 (en) * | 2017-10-31 | 2019-05-02 | Toyoda Gosei Co., Ltd. | Airbag for head protection |
US10836342B2 (en) * | 2017-10-31 | 2020-11-17 | Toyoda Gosei Co., Ltd. | Airbag for head protection |
Also Published As
Publication number | Publication date |
---|---|
DE10225214A1 (de) | 2003-01-23 |
CN1278888C (zh) | 2006-10-11 |
CA2389989C (fr) | 2005-10-25 |
CA2389989A1 (fr) | 2002-12-11 |
DE10225214B4 (de) | 2007-10-04 |
US20030006588A1 (en) | 2003-01-09 |
CN1390723A (zh) | 2003-01-15 |
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